Hi Mike and all other PIC experts,

thank you for your mail, I forgot to say in my mail that I made sure to
change the baud rate generation constants, I'm using 9600 bps and BRGH=1.
I replaced the constant 103 with 129 which should give the same error of
+0.16%.

Any other suggestion ?

thanks chaipi



On Thu, 11 Apr 1996 mriendeau@vicr.com wrote:

> Chaipi Wijnbergen wrote,
>
> >I am developing a small project using the PIC 16C74 and recently
> >needed to change the Crystal from 16MHz to 20MHz. When I did
> >that, a problem started with the asynchronous communication
> >controller, it started to recived wronge characters.
>
> Check out pages 2-600-607 of the MC 1995/96 Databook. It's the
> section on the (SCI) module, which has a formula for baud
> rate error and information on the registers etc.
>
>                                 Mike
>